Stop-motion.



J. S. HENRY STOP MOTION.

APYLIOATION FILED SEPT. 7, 1911.

Patented A11g126, 1913.

2 SHEETS-SHEBT 1.

J. S. HENRY.

STOP MOTION.

APPLIOATIOR FILED SEPT. v, 1911.

2 SHEETS-SHEET 2.

Patented Aug. 26, 1913.

IIIIIIIIIA' UNITED STATES PATENT OFFICE.

JOHN S. HENRY, OF STONINGTON, CONNECTICUT, ASSIGNOR TO THE A'IWOOD MACHINE COMPANY, OF STONINGTON, CONNECTICUT, A CORPORATION OF NEW JERSEY.

STOP-MOTION.

To all w/mm it may concern Be it known that I, JOHN S. HENRY, a citizen of the United States, and resident of Stonington, in the county of New London and State of Connecticut, have invented a new and useful Improvement in Stop-"Viotions, of which the following is a specification.

My invention relates to an improvement in stop motions for doubling and twisting machines, and more particularly to the structure of the drop wire and parts which cooperate therewith.

The drop wire, as heretofore commonly constructed, was made with a side loop engaging the upper part of the swinging frame only, when lifted by the strain of the thread. This constant pull, together with the vibration of the machine, would cause the wire to unlatch the swinging frame and stop the takeup withoutthe thread breaking. My present invention is directed to means for obviating this unintentional stoppage, which means consists in providing the drop wire with a lateral extension, such as a backwardly extending loop which will engage a stationary stop independent of the swinging frame, when the drop wire is lifted under the strain of the thread and thereby effectually prevent any movement of the swinging frame.

In the accompanying drawings, Figure 1 is a view in side elevation of so much of a twisting and doubling machine as will suffice to show a practical embodiment of my invention. Fig. 2 is a partial vertical section of the same from front to rear. Fig. 3 is an enlarged view partly in elevation and partly in section. Fig. 4 is a top plan view of a portion of Fig. 3, and Fig. 5 is a vertical section in detail of a portion of the swinging frame and slide.

The main frame of the machine is denoted by 1, the superstructure by 2, one of a bank of cops from which threads are drawn, by 3; the thread guides for holding the threads under proper tension, to the roll 4, are denoted by 5, 6, 7 8 and 9, the springactuated slide by 10, the stop wedge carried by the slide, by 11, the swinging frame which unlatches the slide 10, by 12, and the rotary toothed cam which engages the drop Specification of Letters Patent.

Application filed September 7, 1911.

Patented Aug. 26,1913. Serial No. 648,120.

wire to rock the swinging frame to unlatch the slide, by 13. These parts may be of well known or approved form such as are now in use.

One of the drop wires is denoted by 1 1. It is provided with a rearwardly extending loop 15 which projects through a vertical slot 16 forn'led in the face of the swinging frame 12. The lower end of the drop wire is in position to engage a tooth of the rotary cam 13 to cause the rocking of the swinging frame to unlatch the slide 10 as is usual.

The loop 15 which is essentially a rearwardly projecting nose on the wire, is adapted to engage a projection 17 on the main frame 1, when the wire is lifted under the tension of the thread.

Any stg ai upon the thread, see Fig. 2, tending to draw upwardly on the wire 14, will be transmitted from the nose or loop 15 to the projection 17 on the main frame and thus will relieve the swinging frame from strain and prevent it from rocking and thereby unlatching the slide 10. lVhe-n, however, the thread, denoted by 18, breaks, the wire 14 will drop into position so that its lower end will be engaged by the rotary cam 13 and the swinging frame will then by the rocking of the said cam be rocked into the position shown in dotted lines in Fig. 3, to unlatch the slide and allow it to move under the tension of its spring in a direction to throw the stop wedge 11 into active position to stop the machine. The several slots through which the loops or noses on the several needles similar to 1 1 extend, are shown in dotted lines in Fig. 4. These slots not only permit the nose or loop on the needle to come in contact with a stationary part and thereby relieve the swinging frame of strain, but they also serve to hold the needle with its nose or loop directed backwardly.

\Vhat I claim is:

In combination with suitable mechanism for transmitting motion to a stopping device, a swinging frame provided with a narrow slot elongated in a plane transverse to the axis about which the frame rocks, a drop wire carried in the said slot and provided with a lateral extension in position to rise and fall within the slot and thereby prevent the rotary displacement of the drop as my invention, I have signed my name in Wire, and a stationary stop overhanging the presence of two Witnesses, thls first day of slotted portion of the said swinging frame September 1911.

to engage the lateral extension on the drop JOHN S. HENRY. 5 Wire when the said Wire is lifted by the itnessesz thread. EDWARD E. BRADLEY,

In testimony, that I claim the foregoing Jos. F. JOSEPH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

